NIHF Inductee Henry Phillips Invented the Phillips Screw

National Inventors Hall of Fame Inductee Henry Phillips invented the Phillips screw, where its significance lies in the self-centering property.

The History of Early and Modern Screws and Screwdrivers

NIHF Inductee Henry Phillips Invented the Phillips Screw

Progress is fine, but it's gone on for too long.: The Phillips Screw

Henry Phillips's Instagram, Twitter & Facebook on IDCrawl

the phillips screw: why? [a sentimental history]

How the Phillips Screwdriver Took Over America

The History of the Phillips Screwdriver - Chris Duke

How One Patented Screw Increased Speed in Automotive Assembly

Tools: Why was the Phillips screw invented? - Quora

90 years ago, a Portland inventor patented the Phillips screw